Load-securing means for industrial trucks



Dec. -19, 1922. 1,439,233

A. R GOLDRICK LOAD SECURING MEANS FOR lwousrRlAL-TRu cKs.

P LED AUG- 20. 1921 2 SHEETS'SHEET I Dec. '5 8, W22,

' A. R. GULDRICK.

hoAo SECURLNQ MEANS FOR INDUSTRIAL TRucKs 2 SHEETS'SHEET 2 FILED Rue. 20.'1921.

Ell 15%:

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Patented Dec 19, I922.

ETELE 'TT.

Pllhlhllf ALBERT R. GOLDRICK, OF CLEVELAND; OHIO, ASSIGNOR TO THE ELW'ELL-PABKER, ELECTRIC COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

LOAD-SECURING MEANS FOR INDUSTRIAL TRUCKS Application filed August 20, 1921.

ing drawings.

This invention relates to industrial trucks wherein a truck is provided with mechanism for lifting, transporting and depositing loads.

In an application for Letters Patent on an industrial truck, filed July 9, 1920, Serial. No. 394,933, by Clyde I). Cochran. an industrial truck is shown and described as equipped with load handling mechanism which is part icularly adapted to the loading and unloadingot large paper rolls. The load handling inechanism described in that application is comprised of a boom 'iivotally mounted on one end of the truck and a loading scoop rotatably mounted on the boom which is adapted to load an article elevate it to an inclined transportable position over the truck and subsequently lower and deposit it. This loading scoop may also be rotated when in the in- 30. clined position to a substantially horizontal position. An lip-ending of the boom will cause the load to be deposited in a horizontal position. The loading mechanism described in the aforesaid applica t-ion, however, engages av considerz-il'ile part of the circim'ilerential surface of the roll. the truck etliciently, clearance space must be present about the circmn't'erence ot' the, roll.

Itis particularly desirable to have the A0 foregoing mechanism arranged in such a manner that large paper rolls may be handled by the truck without necessitating any physical; ellorton the part of the operator except to manipulate the levers controlling the mechanism. Likewise, it is quite desirable that the mechanism be arranged to deposit the rolls in an upended position and in juxtaposition. T his is particularly true when the truck is being utilized to unload the rolls in railroadcars as it is essential that all of the floor space of the ear be used.

The general object of this inventiomtherefore, is the provision of mechanism in combi- Y nation with an industrial truck which is adaptable for the ei'ficient loading, transport Hence, in order to use Serial No. 493,799.

ing and unloading of large paper rolls, irrespective of the relative positions of the rolls.

More specifically, the object of the present invention is to provide a tiltable boom on an industrial truck havingloading means and load-securing means in conlbination therewith which are arranged to automatically co-operate in engaging the load; the cooperating: action being brought about by boom tilting mechanism carried by the truck prior to the tilting of the boom.

X further object of this invention is to so ar ang e the above mentioned means that the operator may approach any one of a num ber of up-ended rolls positioned closely together, engage it with the load-handling mechanism. secure it thereon, and remove it from its position relative to the other rolls, after which it may be tilted to an inclined transportable position on the truck.

Other objects will become apparent from a description hereinafter set forth in reference to the accompanying drawings which illustrate a preferred embodiment of my invention. The essential 'clnuacteristies are summarized in the claims.

In the drawings.- Fig. 1 is a side elevation of the truck such as I have referred to, hawinn; load-handling and load-securing means incorporated therein; the load being shown in substantially vertical position; Fig. 2 is a plan elevation of the roll mechanism in-the truck; Fig. ii is a front elevation oi the loadhandling and load-securing mechanism. while Fig.4 is a cross-sectional elevation substantially along;- the line 4- r of Fig. 3; Fig. 5 section on the line Fig. 3; Fig. 6 is a view similar to Fig. 5 showing the parts in different. relation. and Fig. 7 is a section on the line 77, Fig. 3.

Designating the various parts of the truck and hiaddiamlling mechanism by reference characters, Figure 1 illustrates a truck which may be comprised substantially of a frame 10 and boom 11 pivotally secured to the end thereof and boom actuatingmeans 12 con sisting of a winding mechanism and a fiexi ble member 13. The end of the flexible memher or cable is secured to a load supporting apron 14 a sutiicient distance from a pivot mounting 15 on the boom to efi'ect a turningmovement of the apron. When the winding mechanism draws on the cable the boom apron and'load will be tilted to an inclined position as indicated by the dot and dash into engagement lines in Fig. l. vl hile the boom is in the 'members 16 serve to limit the inward and outward swing of the boom.

The load supporting apron. liOWGVQl. is described in the application hereinbe fore. mentioned as being comprised of a semicircular metallic sheet. A diliiculty encountered in manipulating the nailing mechanism having an apron of such dii'nensions was that when the rolls were stored in an upended position and in contact with one another. considerable annoyance was experienced in that the apron could not be brought with one roll without first moving the roll a sutlicient distance away from the other rolls to obtain clearance thercbetween for the apron. The apron t l, therefore, may be arranged to extend about the circumference of the roll. o'distance not greater than a quarter thereof. This apron may be rigidly sei 'orcd to a pivot member l7 associated with the pivotal bearing member 15, carried by the boom. A bottom projecting portion 1% may be arranged to li o in a horizontal position on the ground or iloor when the apron is in a substantially upended loading position. This projecting member may have a tapered edge 19 to facilitate the forcing thereof undcr tho load by a backward movement of the truck. llx periencc in using this typc oi truck has shown. however. that it is necessary to have some means cooperating with the loading apron for retaining: the loud in position thereon when the load is being tilted to a llHIlSPOltdlllQ. position on the truck.

To ellectiwly secure the load on the load ziproim l hove provided a loud gripping incinbcy ill corresponding in shape to the projecting portion ltw' secured to the bottom of the apron. and which may be automatically brought into t?I1{ f&\,tH1OI1t with the load. This grippinc membcr may lac carried by a supportingmember 21 adjusta ly secured to a movable member slidably mounted on the upper portion of the apron H. The slide member may be rctuincd in an elongated opening 23 in the apron by rccu'l'orcing bars 24- and rigidly secured thereto.

The slide member 22 may have thc lower end thereof turned outwardly to form a seat 529 for the resilient member 50: the resilient member thus maintains the slide liar and the grippingmember 20 in a sulliciently elevated position as illustrated by the dot and dash lines in Fig. l. to provide adequate space between the gripping member rind the top of the roll when the truck is approaching; the load.

The slide her and gripping: member may be lowered engagement with the top of the load by any suitable means. I prefer llOWGVQI'. in"; make operation illltfll lliltlil.

and contingent npon the operation of the boom. Tins automatic action, may be obtained in a very effective manner by securing the end of the cable 13 to a stud member 32 rigidly attached to the slide member 22. A sheave member 33 positioned on the apron below the slot 63 serves the double purpose of a guide for the cable well as to obtain an increzve in pull exertedv upon the slide bar 2:2 and guppin member 20. The positioning oi the member 83 is likewise de pendentupon the amount of torque which would he required to rotate the maximum load curried by the apron 14- abont the pivotal llcncc. as nism ll draws on the cable 13 to tilt the 1. ie cable will more. sufficiently to draw the incinbcr 20 downwardly into en. gagenicnt with the upper-end of the load and at the same time compress the resilient member 2! and as the movement of the cable will stop momentarily upon the ongagement thereof, a suliicicnt grippingforce will be it i ned between the propictmg portion 1 5 i i the gripping member 20 to s9- cure gal on the apron l before any tiltu 'til'lclll'. of thc boom takes place.

A. in. ier drawing in movement of the cable tilt the boom iinyardly over the 1 hr telescopic members it) serve to rcsil oppose this tilting movement :1

suliiciczi'z"amount to always maintain a con sidera e tension. in the cable, hence. the nripp o member is rigidly maintained in rent with the load during this movedcsircd to rotate the load from this position to a substantially hori- Hi inclin zontni position and thou deposit it, the boom may he retained in the tilted position by suitabl catch mechanism (not shown) its the cu i is gradually payed out by the width in mm-hanism; the center of gravity or" the load and hooin being arranged with relation to thirotating axis of the apron. Any substantial tilting movement of the boom must be prevented in cll'cct this rotating movement. The rclution oi the various parts adapted to obtain this result is described in.

my application hereinliclore referred to.

In order to rotate a load into a horizontal position however, it is necessary that an extension be provided on the apron which may be shii'tcd in a circuinlcrential direction about the s de of the load a sufficient distance to pass the center thereof. A very simple and economical supporting mechanism which can be manipulated from the drivers position on the truck, may be comprised of arcnate members 34: maintained in sliding: relation on the apron by supporting bars 35 and 36 rigidly secured to the apron. The position of th se mcmbors which may be substantially halt-way between the portion 18 of the apron and the grippiiiginember 20. The members 34 should be oi Euf'icient strength to withstand the maXim-hin bending moment which can be exerted thereon by i the load as the load is being rotated to or from a horizontal position.

I prefer to mount these a'rcuate members on the apron in such amanner that they can be manipulated by the operator by means of. a flexible member 37. The flexible member may .have sufiicient slacknessto permit the retaining of a looped portion thereof by a sheave member 38 positioned atthefront of the truck, when the apron is rotated about the pivotal axis 15. A pair of sheaves 39 and 40 serve guide members for the cable; the ends of the cable being attached to connecting plates all and 42 which are secured to the ends of the arcuate members 34. The operator may thus slide the members 34 to the extended position illustrated in Figs. 1 and 6 when raising or lowering the load from or to a horizontal load, or, if it is desired to approach one of the rolls standing in a vertical position,

the operator may slide the member 34 in an arcuate direction about the apron substantially to the position illustrated in Fig". 5. X0 interference will thus be encountered between the loading apron and any of the adjacent rolls when one ot the rolls is being loaded onto the truck.

'I prefer to have the outer ends of the members 34 rounded and. bent outwardly so that when the boom is tilted to an tip-endedposition with theloading apron and mechanism carried thereby'in a horizontal position, the ends 44 will be in contact with the ground or floor as the case may be. The load may then be rolled over the ends 44; of the members 3% and. be positioned thereon. Hence, as the winding mechanism draws in, on the cable, the gripping member 20 will be brought into engagement with the end of the roll (the end surfaces of which are now in, vertical planes) and a gripping movement of the member 20 will shift the end slightly until the other end is in en gagement with the end 18 of the apron. The roll will then be gripped sufiiciently to maintain it on the members 34 as the apron is rotated into transportable ppsition on the truck.

The supporting bar 21 may be adjustably secured to the slide bar- 22 in any convenient manner such as removable bolts 48 which may be inserted in any pair of a series of openings t?! formed in the upper end of the bar. I adjusted for rolls of any length within the capacity of the truck by the proper adjustment of the bar 22. I

From the foregoing description, it is' obvious that by the use of my device in combi- The loading mechanism may thus be nation with an industrial truck. extremely heavy loads may be loaded and secured automatically in a transportable position on the truth irrespective of the position of the load; i. e'. the load may be picked from eithera vertical or horizontal position. elevated to an inclined position on the truck and subsequently be deposited in either of those positions without necessitating any manual. effort on the part of the operator outside of the manipulation of the cable member 3? and the usual levers which control the movement of the truck and the operation of the winding mechanism.

Having thus described my invention, l

claim 1. The combination of" a truck, a boom pivotally secured thereto, a load tilting means supported by the boom adapted to Shift the load from a vertical, to an inclined position, means carried by the latter means for engaging the top and bottom surfaces of a load to be transported and means for causing said last named means to engage the load and thereafter-tilt the boom and load.

The combination in a truck of a boom pivotally mounted thereon. a load lifting member secured to the boom and adapted to swing in one position to approximate the vertical, means to tilt the boom and said load lifting member, and means carried by the load lifting member and operable by the said first mentioned means'tor automatioally engaging the load when. said last named means tilts the boom.

3. The combination of a truck. a boom pivotally secured thereto, means to shift the boom, a load lifting member pivoted to the boom, said load lifting member having a bottom load engaging portion rigid there with and an upper movable load engaging member adapted to clamp the load on the load lifting member when said boom shift ing means is operated.

i. The combination of a truck, a boom pivotally connected therewith, means movable with said boom forengaging the top, bottom and side of a load, and means for tilting the boom and causing said last named means to engage the load prior to imparting a tilting movement tothe boom.

the load whensaid boom tilting means is operated.

6. The combination of a truck, a boom pivto swing otally secured thereto load lifting means supported by the boom adapted to shift the load from a horizontal to an inclined positiom means carried by the latter means for engaging the ends of the load and means for rausingsaid last named means to engage the load and thereafter raise the load.

7 The combination in a ti'uek of a boom pivotally mounted thereon, a load lifting member secured to the boom and adapted in one position to approximate the horizontal. means to swing: the boom and to rotate said load lifting member and means carried by the load lifting member and op-v erated when the means to swing the boom is actuated for automatically engaging the load prior to any swingingmovement of the boom.

8. The combination of a truck, a boom pivotally secured thereto, lifting means rotatably mounted on the boom, means for socuring the load to the load lifting means, and mechanism. for successively operating said load securing means and said boom respectively.

i). 'lheeombinationof a truclna boom pivotally secured thereto, means to shift the boom, and load handling and lifting means eonu'n'ised substantially of an arcuate load support rotatablysecured to the boom and having a projecting portion rigidly secured at the bottom thereof for engaging the bottom of the load, and a relatively movable projecting n'ieinber positioned at the top of the support adapted to be brought into engagement with the load by said boom tilting mechanism prior to th tilting of the boom.

10. The combination in a truck adapted to carry a roll of paper of a boom pivotally mounted thereon, load handling and litting means comprised substantially of an arcuate support rotatably mounted on the boom and having a projecting member rigidly secured thereto adapted to be inserted beneath the load, Winding u'iechanism for shifting the boom: a movable member positioned at the top of the support and operated by said Winding mechanism, and extensible means slitla'oly mounted on the arcuate support for supporting one side of the load when the same is being lowered from a recumbent position to a horizontal position or vice versa. 7

11. The combination of a, trucln a boom pivotally secured thereto, load handling and lifting moans rotatably mounted on the boom and mechanism for successively operating said load handling means and said. boom including a load engaging member movable logitudinally of the load.

12. The combination of a truck, a boom pivot-ally secured thereto; means to shift the boom, load handling and lifting means comprised substantially 0t rotatable loacl support having an arcuate member slitlably mounted thereon and controllable from the operators position on the truck, and a relalively movable member positioned at the top of the support adapted to be brought into engagement with the load by said boom tiltingmechanism, said arcuate member being adapted to retain the load on the support when the support is being rotated from is horizontal to a vertical position or vice versa.

In testimony whereof, l hereunto ailir; my signature.

ALBERT R. GGLTDRICK. 

